Sibeile IMR10440 350mAh (Black)



Official specifications:

• Capacity: Nominal:350mAh,Minimum:320mAh
• Dimensions: Diameter:10±0.1mm, Height:44±0.2mm
• Weight:(Typical)Approx.23g
• Nomical Voltage: Average 3.7v
• Cut-off Voltage: 3.0v
• Full Charge voltage: 4.2V
• Internal Impedance: less or equal to 180 milliohm(with PTC)
• Cycle Performance: 90% of initial capacity at 400 cycles
• Cycle life: >500 cycles
• Charge: Current=0.5C mA Voltage=4.2v End Current=0.01mA
• Discharge: Current=0.5C mA End Voltage=3.0v
• Max.Charging current: 1.5C ma
• Max.Discharging current: 1.5C ma(for continuous discharge)
• Temperature: dishcarge temperature range:-10°C—60°C
• Charge temperature range: 0°C—40°C
• storage: 1 year:-20°C—25°C, 3 months:-20°C—45°C, 1 month:-20°C—60°C

I do test the cell with a very high current for the size and it does deliver power, but it is best to stay below 1A















Conclusion

The performance is average for 10440 cells and I will call it an acceptable cell.



Notes and links

The batteries was supplied by Sibeile for review.

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Comparison to other LiIon batteries